Valtteri Bottas left it until his final lap to set the quickest time. Bottas and Mortara have topped the timesheets in every session held so far this weekend.

The start of practice had had to be delayed while repairs were made to the track following a crash in an early qualifying session, and F3 team agreed to shorten the originally scheduled 45-minute session down to 30-minutes.

At the midway point of the session, Mortara delivered his best effort to top the timesheets shortly before Rio Haryanto brought out a red flag when he crashed into the barriers on the exit of the final turn.

At the restart, Bottas and Mortara both pushed hard to improve on their times –but it was Bottas who did the best job as he set his best lap on the final lap of the session to end it six-tenths quicker than his closest rival.

Mortara’s Signature team-mate Marco Wittmann was third fastest, ahead of Carlos Huertas – who found out this morning that he has been handed a five-place grid penalty for infringing the yellow flag regulations during Thursday’s first qualifying session.

There were a number of incidents throughout the session, with Carlin’s James Calado crashing at Fishermen’s Bend and Will Buller also brushing the barriers at the same corner. And, as well as Haryanto’s incident, Carlos Munoz went straight on into the barriers at Police.